Type-writing machine.



PATENTED OCT. 22. 1907.

0. WOUDWARD. TYPE WRITING MACHINE.

APPLICA'LIGN FILED SEPT. so. 1905.

2 SHEETS-SHEET 1.

NVENTDR:

.HSAITDRNEY PATENTED OCT. 22. 1907.

` 0. WOUDWARD.

IYPE WRITING MACHINE. APPLIOATIOF FILED SEPT. 30, 1905.

2 BHEETS-SHEET 2 !NVENTDR T ML I Hs TTURNtY UNITED STATES PATEXT OFFHJE.

OSCA R IHYXRD, OF NEW YOR X. Y., ASSIGXOR TU YVIOFF, SEABI'AXS BEXEDGT,

OF UJOX, NEW YORK, A CORPORATIOX 01' .\'I'\\` YORK.

TY -?E-WRITING MACHINE Specification of 'Letters Patent.

Patented Oct. 22, 1907.

has n series of slnts 33 (Fig. 2) formed in its lower edge and the kcy lcver 30 and the key'lever of the character keys ol' the machine stand in these slots in the manner indiculed in' Figs. l and 2. 5 The key leve' 30 is provided with a returning spring 34, thelowercnd of 'which is connec' ed to said key lever and the upper end of which is connected with a hook or bracket 35 Secured to the back shelf 3. The forward end of the key lcver 30 plays in a slot in u conb"plate 36 which ;judas its motion. The key lever 30 is connected by n. two-part adjust-able link 37 with an arin 33 projecting toward the front of the machine from a transverse rocl shz't 39 that is journaled in bmekets 40 depending 'fmin the top plote 5. The arm 38 has a huh that is Secured to the shait39 by set screws 41. At a point upproximatcly beneath the feed pinion 16 the slat 39 has projccting thereirom toward the tear of the machine an arin 42, the hnb of which is Secured on said shalt hy a set screw 43. Endwise !nation of the shaft 39 is prevcntcd by the engagement of the huhs of the arms 38 and 42 with the hmckets 40.

The tree end of the arm 42 has pivoted theretoa pawl 1 and guide mambo r 44, the stern of 'which extends upward through an opening in the top plote 5 and the operative p-.rts of which engage the mtchet wlccl 23. Sid member 44 has the form best. shown in 1 ig. 5. At its luwcr end said member has projecting tlcrcfron through a liole iri the arm 42, &shouldcred rivet 45. against the end of which a spring 46 hours. forning'a rcndily -detachahle clip. Said memher has a portion then-ni' formed into a pnwl 47 that is adaptcd to cngnge the notches in the wheel 23 to turn said wheel for hack spncing the carriage. Said member is also iormcd with a curyed guide arm 48 of in vertcd U-slape which lies in front of the wheel 23 and extends over the housing 18 and down on the righthand side of said housing. The member 44 is prferably made of sheet metal by bending up a blank of the onn shown in Fig. 7. Said, blank is bent along the i 4 0 line a of said Fig. 7, so thatrthe flat side of the pw l 17 'engages .the periphery of the wheel 23 and the fiat {ace oi the curved arm 48 is in position to engage the front face of :said wheel 23 and thus prevent motion of the memher44 toward the back of the machine.

The machine shown in the drawings has a rod 49 that is mount ed 'inhracketsO that rise from the top plate 5.

said rod passes underneath the housing 18 a little in front of the wheel 23 and I utilize said rod to prevent he pawl from falling toward the front of the machine.

50 To this end the eurved arm 48 is formed with a tail portion 51 that stands behind the rod 49 when the pawl is operated and preyents motion oi said pawl toward the front of the machine. The curved guide arm 48 is so i'ormed and the part are so proportioned that when the arm 42 is in its normal or lower position, the pawl 47 is out of engagement with the wheel 23 but stands just 'hcneath one of the notches 28 in said wheel, the

.pawl being held' in this position by the engagement of the curved guide arm 48 with the housing 18. When the key 29 is depressed, the arm 42 is elevated and the pawl 47 is moved into the notch 28 and operates tlie wheel 2.3 turning it clockwise [rom the front, a distance ol .one hoteli or far enough to cause each oi the pawls 21 to dmp behind the next suceeding tooth in the ratche't 85 wheel 20 which is rigid with the escapement wheel-10.

This movement of the 'parts effects a hack spacig movement-of the cirriage e. letter space distance and a back space of the carriage for a letter space distance is etfectezl at each (lepression of the key 29. lt will be understood that in themacline here shown said escapement wheel is hcld against backword rotation by the usual feed dogs. and that in machines in which the feed dogs are adapted to permit backword rotation of the escapement wheel, said escapcment wheel may be rigidly inounted on the shutt 17, and the mtchet 20 and pawls 21 may be dispensed with, if desired, so far as certain features of ry invention are concerned. As the member 44 rises upon the depression of the kcy 29 it is guided in its motion by the engagement ni the pawl 47 with the wheel 23 on the one hand and by the eng-agement of the curved guide arm 48 with the housing 18 on the other, sot-hat said pawl is free to follow the nmtionof the wheel but cannot come out of cngagement with said wheel. The lower part of the right-hand side of the guide arn 48 is orncd with a curvo 52 somcwhat sharper than the other parts of the eurve of said arm and at the moment when the pawl 47 reaches the highest. point in its strok thi sharpcr curve 52 engagcs the righthand side of the 'housing 18 below the vertical center of said housing and arrests the motion of the pawl. At the same time, the member 44 is jamned, the curv c 52 tending topull the pawl 47 forcihly into the notcl 28 in the wheel 23 with the result that said wl ccl is positively arrested in its motion and any ovcrthnw of the wheel and of the carriage beyond the single lct ter space distance is thus pnsitively prevented. When the kcy 29 is released the member 44 drops downwrd, such downward motion moving the 'curved portion 52 o the mitting the pawl 47 to slip out oi the notch 28 and to return to normal position beneath the next succecding notch 28.

The shaft 39 is provided with a returning spring 53 '(Fig. 2). One end of said shalt projects through and beyond one o( the brackets 40 and the spring 53 is coiled about this projectirg end of the shat. One end of said spring is inserted in a hole in the bracket 40 and the other end is secured in the same or in any suitable manner to a collar 54 which surronnds said shaft and which is formed on its outer end with a slut 55 for thc insertion of a tool similar to a screwdn'ver. The collar 54 is adaptcdto be Secured in position on the shaft 39 by a -set screw The tension of the spring 53 may be regulated by loosening the set screw 56 and turning the co`llar 54 by meanof the tool reicrred to until the desired tension of the spring 53 has been produced, and then again tightening the screw 56.

It will be perceived that whenet'er it is desired to back step; the carriage, the key 29 may he depressed until it is arrested by the jammingof the curved portion 52 of the arm 48 engaging the housing 18 with the result that the wheel 23, shait 17 and piion 16 will be tumcd toward the right a suitable distance to step the carriage hack one letter space distance. This operation may obviously he rcpeatcd as often s dcsired and the key may be struck sharply andiquickly as the means described positively prevent tiny overthrow of the parts. It will also be pcrce-ved that us the pawl 47 is normally out of engagement with the-wheel 23, the carriage may bo moved ireely in either direction without it being ar`m 48 outof engagement with the housing 18 and pcr- A interfered with by the back spacing mechanism. It will als be pereeived that. the rock shah, 39, being mounted in the lugs or brackets depending' from the top plate, is the only part of the back spncing medianisn that is Secured to the framework of the machine above the base portion of said framework and that this is ecured in such a position that it is itselireadily detachahle without interiering with other parte of the 'mechanism and its position is such that it does not interfere with the assembling of the other paris of the mechanism nor their removl .in case of need.

various changes may he made in the details d construetiun and amngement without departing from my inventicn. V

The means shown in the present ease whernby th'e key lever 30 is fulerumed at its reat end. are claimed in my pending application filed August. 15th, 1905, Serial 274,288. s

What I claim as new and desire te seeure by Letters' 1. in a typewritiug machine, the comhinniion of a eurrluge: a shat genred to said cart-lagu: :1 ''zitehet wheel oh said Slllt: a hack spacing pnwi adum d in openinsaid rutchet wheel but normally ont of engngement therewitl; a key for operatlng said pawl; :nd menus for pr"- wenting over-throw ut said ratchet wheel when said pim-l 3. in a typewriting machine, the comhimtion of a car-' ringe: a slnft geured to snid cnr iage n housing in which said shnft is journaled n hack spacinratchet wheel I on said sinft: a back spacin; mwl fin' Operating suid adapted tn guide said mwl ont of engagement with said ratehet. wheel when said pwlreturns to'nurmal position and m foreilly enguge said pnwl with said mtchet wheel at the end of the positive sti-uki: of sid puwl: end n key tor Operating said pnwl.

5. in a typewriting machine. the comhinziion of a earriage: a feed raek on said carrluge; a feed shutt gent l to said feed rai-k; a housing in which said feed s fomed e( sheet metal ah! buying a curved guide arm integral with said pawl and bent oti` therefrnm in such fashion that the flat race of said guide h m is substaniinliy ut right angles to the fiat face of said pawh T. lu a typewriting machine, the combinntinn of n carriagr. ..i shit geared to said carl-[age: u back spzciu: utelict wheeimounted on said shatt (a back spncing pnwl for Operating said rutchet wheel. said pawl hin-ing a U-shapcd guide arn the inside curve ot which is adapted to eug'c :i part oi the inat-hine andgulde the metinn of said pzwl und a key tor Operating said pnwl.

S. In a typewriting machine. the conblnntlon of n'carringe: a shutt geared tu said cirrlze a housingdn which said' shnt, is jurnaledf. back pacing -rztchet wheel nunied ou said shaitrn hek spacing pawl aduted in -ngage said ntelet wheel n one side ef said housing and having :i guide arm aduped to engnge the other side of siid heu to guide the motion nt the pwl; :im: ke for Operating said puwl.

t). In a typewriting machine; the crmhinztin of a ea riage-u shaf genred to said curriage; a rutelet whe-l muuuted :m said shutt; a housing in which saidshai't is joni-naimi: a mwl zdapted to engage said rntclet wheel at one sidnr siid h'osing und having a guide nrn er tendinto the the'' side of said housing, said guide arm having a part adatei to engage said housing :it ile end of the sti-oke of the pnwl and to cmse said pnwi to 'he forclhlyi pressed against sid rztclet wheel to prevent qverthrow; and u key fur Operating said pnwl.

10. In a typewrlting machine, the conlinutiunof'n carriage: a feed nick then-for: u feed piniun onen-:ed hy sid feed raek: ;n eseaene'ut wheel: puwl and 'nieh-t QSAR woovwAnn.

witnesses:

E M. WELLS, M. F. liwwnm. 

